公开(公告)号：US10776210B2

公开(公告)日：2020-09-15

申请号：US15281910

申请日：2016-09-30

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Alastair Slater ,  Peter Thomas Camble ,  Andrew Todd ,  Simon Pelly

IPC: G06F11/14 ,  G06F16/174 ,  G06F16/11 ,  G06F16/215

Abstract: Example embodiments relates to method and systems to restore content of a volume at a given point in time. A computing device to restore content of a volume at a given point in time comprises a physical processor and a machine-readable storage medium comprising machine readable instructions executable by the processor that cause the computing device to command a storage array to select a surviving snapshot that was created at a nearest point in time to the given point in time among a set of surviving read-only snapshots of content of the volume stored in the storage array, command the storage array to create an editable surviving snapshot of the selected surviving snapshot, perform a delta function associated with a deduplication system, the deduplication system comprising a set of backup objects for the set of surviving read-only snapshots and a set of backup objects for a set of non-surviving read-only snapshots of content of the volume and restore content of the volume at the given point in time by commanding the storage array to modify the editable surviving snapshot based on an output of the delta function. Each of the backup objects within the deduplication system comprises a manifest, the manifest comprising a list of chunk signatures that represents chunks of data. The delta function is performed between a manifest of a backup object of the selected surviving snapshot and a manifest of a backup object of a snapshot created at the given point in time.

公开(公告)号：US20180150236A1

公开(公告)日：2018-05-31

申请号：US15361939

申请日：2016-11-28

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Andrew Todd ,  David Malcolm Falkinder ,  Ieuan James Henry ,  Alastair Slater

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0641 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/067 ,  G06F11/14

Abstract: Examples include the storage of format-aware filter format tracking states. Some examples include storage of a format tracking state for a format aware filter in a backup system in association with a backup object, access of the format tracking state from the backup system in response to detection of a potential continuation of a backup image, and applying the format-aware filter using the accessed format tracking state.